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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>nmblookup</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.60.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="nmblookup"></a><div class="titlepage"><div></div><div></div></div><div class="refnamediv"><h2>Name</h2><p>nmblookup — NetBIOS over TCP/IP client used to lookup NetBIOS
names</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><tt class="command">nmblookup</tt> [-M] [-R] [-S] [-r] [-A] [-h] [-B <broadcast address>] [-U <unicast address>] [-d <debug level>] [-s <smb config file>] [-i <NetBIOS scope>] [-T] [-f] {name}</p></div></div><div class="refsect1" lang="en"><h2>DESCRIPTION</h2><p>This tool is part of the <a href="Samba.7.html"><span class="citerefentry"><span class="refentrytitle">Samba</span>(7)</span></a> suite.</p><p><b class="command">nmblookup</b> is used to query NetBIOS names
and map them to IP addresses in a network using NetBIOS over TCP/IP
queries. The options allow the name queries to be directed at a
particular IP broadcast area or to a particular machine. All queries
are done over UDP.</p></div><div class="refsect1" lang="en"><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">-M</span></dt><dd><p>Searches for a master browser by looking
up the NetBIOS name <i class="replaceable"><tt>name</tt></i> with a
type of <tt class="constant">0x1d</tt>. If <i class="replaceable"><tt>
name</tt></i> is "-" then it does a lookup on the special name
<tt class="constant">__MSBROWSE__</tt>. Please note that in order to
use the name "-", you need to make sure "-" isn't parsed as an
argument, e.g. use :
<b class="userinput"><tt>nmblookup -M -- -</tt></b>.</p></dd><dt><span class="term">-R</span></dt><dd><p>Set the recursion desired bit in the packet
to do a recursive lookup. This is used when sending a name
query to a machine running a WINS server and the user wishes
to query the names in the WINS server. If this bit is unset
the normal (broadcast responding) NetBIOS processing code
on a machine is used instead. See RFC1001, RFC1002 for details.
</p></dd><dt><span class="term">-S</span></dt><dd><p>Once the name query has returned an IP
address then do a node status query as well. A node status
query returns the NetBIOS names registered by a host.
</p></dd><dt><span class="term">-r</span></dt><dd><p>Try and bind to UDP port 137 to send and receive UDP
datagrams. The reason for this option is a bug in Windows 95
where it ignores the source port of the requesting packet
and only replies to UDP port 137. Unfortunately, on most UNIX
systems root privilege is needed to bind to this port, and
in addition, if the <a href="nmbd.8.html"><span class="citerefentry"><span class="refentrytitle">nmbd</span>(8)</span></a> daemon is running on this machine it also binds to this port.
</p></dd><dt><span class="term">-A</span></dt><dd><p>Interpret <i class="replaceable"><tt>name</tt></i> as
an IP Address and do a node status query on this address.</p></dd><dt><span class="term">-n <primary NetBIOS name></span></dt><dd><p>This option allows you to override
the NetBIOS name that Samba uses for itself. This is identical
to setting the <a href="smb.conf.5.html#netbiosname" target="_top"><i class="parameter"><tt>NetBIOS
name</tt></i></a> parameter in the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> file. However, a command
line setting will take precedence over settings in
<a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a>.</p></dd><dt><span class="term">-i <scope></span></dt><dd><p>This specifies a NetBIOS scope that
<b class="command">nmblookup</b> will use to communicate with when
generating NetBIOS names. For details on the use of NetBIOS
scopes, see rfc1001.txt and rfc1002.txt. NetBIOS scopes are
<span class="emphasis"><em>very</em></span> rarely used, only set this parameter
if you are the system administrator in charge of all the
NetBIOS systems you communicate with.</p></dd><dt><span class="term">-W|--workgroup=domain</span></dt><dd><p>Set the SMB domain of the username. This
overrides the default domain which is the domain defined in
smb.conf. If the domain specified is the same as the servers
NetBIOS name, it causes the client to log on using the servers local
SAM (as opposed to the Domain SAM). </p></dd><dt><span class="term">-O socket options</span></dt><dd><p>TCP socket options to set on the client
socket. See the socket options parameter in
the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> manual page for the list of valid
options. </p></dd><dt><span class="term">-h|--help</span></dt><dd><p>Print a summary of command line options.
</p></dd><dt><span class="term">-B <broadcast address></span></dt><dd><p>Send the query to the given broadcast address. Without
this option the default behavior of nmblookup is to send the
query to the broadcast address of the network interfaces as
either auto-detected or defined in the <a href="smb.conf.5.html#INTERFACES" target="_top"><i class="parameter"><tt>interfaces</tt></i>
</a> parameter of the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> file.
</p></dd><dt><span class="term">-U <unicast address></span></dt><dd><p>Do a unicast query to the specified address or
host <i class="replaceable"><tt>unicast address</tt></i>. This option
(along with the <i class="parameter"><tt>-R</tt></i> option) is needed to
query a WINS server.</p></dd><dt><span class="term">-V</span></dt><dd><p>Prints the version number for
<b class="command">smbd</b>.</p></dd><dt><span class="term">-s <configuration file></span></dt><dd><p>The file specified contains the
configuration details required by the server. The
information in this file includes server-specific
information such as what printcap file to use, as well
as descriptions of all the services that the server is
to provide. See <a href="smb.conf.5.html" target="_top"><tt class="filename">
smb.conf(5)</tt></a> for more information.
The default configuration file name is determined at
compile time.</p></dd><dt><span class="term">-d|--debug=debuglevel</span></dt><dd><p><i class="replaceable"><tt>debuglevel</tt></i> is an integer
from 0 to 10. The default value if this parameter is
not specified is zero.</p><p>The higher this value, the more detail will be
logged to the log files about the activities of the
server. At level 0, only critical errors and serious
warnings will be logged. Level 1 is a reasonable level for
day to day running - it generates a small amount of
information about operations carried out.</p><p>Levels above 1 will generate considerable
amounts of log data, and should only be used when
investigating a problem. Levels above 3 are designed for
use only by developers and generate HUGE amounts of log
data, most of which is extremely cryptic.</p><p>Note that specifying this parameter here will
override the <a href="smb.conf.5.html#loglevel" target="_top">log
level</a> parameter in the <a href="smb.conf.5.html" target="_top">
<tt class="filename">smb.conf(5)</tt></a> file.</p></dd><dt><span class="term">-l|--logfile=logbasename</span></dt><dd><p>File name for log/debug files. The extension
<tt class="constant">".client"</tt> will be appended. The log file is
never removed by the client.
</p></dd><dt><span class="term">-T</span></dt><dd><p>This causes any IP addresses found in the
lookup to be looked up via a reverse DNS lookup into a
DNS name, and printed out before each</p><p><span class="emphasis"><em>IP address .... NetBIOS name</em></span></p><p> pair that is the normal output.</p></dd><dt><span class="term">-f</span></dt><dd><p>
Show which flags apply to the name that has been looked up. Possible
answers are zero or more of: Response, Authoritative,
Truncated, Recursion_Desired, Recursion_Available, Broadcast.
</p></dd><dt><span class="term">name</span></dt><dd><p>This is the NetBIOS name being queried. Depending
upon the previous options this may be a NetBIOS name or IP address.
If a NetBIOS name then the different name types may be specified
by appending '#<type>' to the name. This name may also be
'*', which will return all registered names within a broadcast
area.</p></dd></dl></div></div><div class="refsect1" lang="en"><h2>EXAMPLES</h2><p><b class="command">nmblookup</b> can be used to query
a WINS server (in the same way <b class="command">nslookup</b> is
used to query DNS servers). To query a WINS server, <b class="command">nmblookup</b>
must be called like this:</p><p><b class="command">nmblookup -U server -R 'name'</b></p><p>For example, running :</p><p><b class="command">nmblookup -U samba.org -R 'IRIX#1B'</b></p><p>would query the WINS server samba.org for the domain
master browser (1B name type) for the IRIX workgroup.</p></div><div class="refsect1" lang="en"><h2>VERSION</h2><p>This man page is correct for version 3.0 of
the Samba suite.</p></div><div class="refsect1" lang="en"><h2>SEE ALSO</h2><p><a href="nmbd.8.html"><span class="citerefentry"><span class="refentrytitle">nmbd</span>(8)</span></a>, <a href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a>, and <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a>.</p></div><div class="refsect1" lang="en"><h2>AUTHOR</h2><p>The original Samba software and related utilities
were created by Andrew Tridgell. Samba is now developed
by the Samba Team as an Open Source project similar
to the way the Linux kernel is developed.</p><p>The original Samba man pages were written by Karl Auer.
The man page sources were converted to YODL format (another
excellent piece of Open Source software, available at <a href="ftp://ftp.icce.rug.nl/pub/unix/" target="_top">
ftp://ftp.icce.rug.nl/pub/unix/</a>) and updated for the Samba 2.0
release by Jeremy Allison. The conversion to DocBook for
Samba 2.2 was done by Gerald Carter. The conversion to DocBook
XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.</p></div></div></body></html>
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